sorting on Last Followup works

helpdesk/query.py

@@ -4,6 +4,7 @@ from django.db.models import Q
 from django.urls import reverse
 from django.utils.html import escape
 from django.utils.translation import gettext as _
+from django.db.models import Max
 from helpdesk.serializers import DatatablesTicketSerializer
 import json
 from model_utils import Choices
@@ -170,13 +171,14 @@ class __Query__:
         search_value = kwargs.get('search[value]', [""])[0]
         order_column = kwargs.get('order[0][column]', ['5'])[0]
         order = kwargs.get('order[0][dir]', ["asc"])[0]
-
+        
         order_column = DATATABLES_ORDER_COLUMN_CHOICES[order_column]
         # django orm '-' -> desc
         if order == 'desc':
             order_column = '-' + order_column
 
         queryset = objects.all().order_by(order_by)
+        queryset = queryset.annotate(last_followup=Max('followup__date'))
         total = queryset.count()
 
         if search_value:  # Dead code currently

helpdesk/serializers.py

@@ -1,6 +1,7 @@
 from django.contrib.auth import get_user_model
 from django.contrib.humanize.templatetags import humanize
 from django.utils.timezone import localtime
+from django.core.exceptions import ObjectDoesNotExist
 from rest_framework import serializers
 from rest_framework.exceptions import ValidationError
 
@@ -74,8 +75,13 @@ class DatatablesTicketSerializer(serializers.ModelSerializer):
         return obj.kbitem.title if obj.kbitem else ""
         
     def get_last_followup(self, obj):
-        followup = obj.followup_set.latest('date')        
-        return localtime(followup.date).strftime('%Y-%m-%d %H:%M:%S') if followup else ""
+        try:
+            followup = obj.followup_set.latest('date')
+            followup = obj.followup_set.latest('date')        
+            return localtime(followup.date).strftime('%Y-%m-%d %H:%M:%S') if followup else ""
+        except ObjectDoesNotExist:
+            return None  # Return None or an empty string if no follow-ups exist
+        
     
 class FollowUpAttachmentSerializer(serializers.ModelSerializer):
     class Meta:

helpdesk/views/staff.py

@@ -1168,7 +1168,6 @@ def datatables_ticket_list(request, query):
     """
     query = Query(HelpdeskUser(request.user), base64query=query)
     result = query.get_datatables_context(**request.query_params)
-    print(result)
     return JsonResponse(result, status=status.HTTP_200_OK)